<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style> 
    span{
        display : inline-block;
        padding : 5px  10px;
        margin : 20px;
        border : 1px solid pink;
        border-radius: 5px;
        box-shadow: 2px 2px 2px pink;
        background-color: lightblue;

    }
    </style>
</head>
<body>
     <script>   
// 外层控制行数
        for(let i=1;i<=9;i++){
            // 里层控制列数
            for(let j=1;j<=i;j++){
                document.write(`<span>${i}x${j}=${i*j}</span> ` );
            }
            document.write("<br>");
            
                

            }
            
     </script>
</body>
</html>